Anthropic Posts Operating Loss in Q3, Compute Commitments Reach $895.4 Billion

By TechFlow

Anthropic, PBC (ticker ANT) filed an amended registration statement S-1/A with the U.S. Securities and Exchange Commission on November 2, 2026 (Eastern Time), providing its first supplemental third-quarter financials. For the third quarter ending September 30, 2026, revenue reached $16.956 billion, a year-over-year increase of 1,127%, while operating loss was $567 million; this contrasts with a $974 million operating profit recorded in the second quarter. The initial S-1 submitted on October 26 only covered the first half of the year.

Why Did Anthropic Swing from Profit to Loss in Q3?

The S-1/A cites two reasons: approximately $5 billion in compute capacity was procured short-term, at higher costs than multi-year contracts; additionally, there were $1.96 billion in non-cash expenses related to a donation matching program. Price reductions and contract discounts reduced third-quarter revenue by approximately $600 million.

Adjusted operating profit for the quarter was $2.463 billion, up from $2.235 billion in the second quarter, though the adjusted operating margin declined from 19% to 15%. Net loss for the quarter was $23.291 billion, of which $21.936 billion stemmed from fair value changes in convertible notes, derivative liabilities, and SAFEs, representing non-cash items. Subtracting these leaves approximately $1.355 billion (calculated by TechFlow, not company figures).

Compute Costs as Percentage of Revenue Rise After Five Consecutive Quarterly Declines

Based on quarterly data from the S-1/A, compute and infrastructure costs as a percentage of revenue fell from 251.1% in Q1 2025 to 48.1% in Q2 2026, before rebounding by approximately 10.1 percentage points to 58.2% in the third quarter.

QuarterRevenue ($ billions)Compute & Infrastructure Costs ($ billions)Compute Cost as % of RevenueOperating Profit ($ billions)

Q1 20253.769.44251.1%-9.35

Q2 20257.8713.90176.6%-12.00

Q3 202513.8220.47148.1%-30.89

Q4 202520.4029.45144.4%-28.36

Q1 202647.3133.8771.6%-16.67

Q2 2026115.5555.5848.1%9.74

Q3 2026169.5698.6358.2%-5.67

Third-quarter revenue grew 46.7% sequentially, down from 144.2% in the second quarter; meanwhile, compute costs rose 77.5% sequentially, marking the first time they outpaced revenue growth in the table. The combination of slowing revenue growth and a premium on short-term compute capacity directly explains why the operating profitability seen in Q2 failed to continue.

Demand continues to expand. As of September 30, 2026, over 11,900 customers contributed more than $100,000 in revenue over the past 12 months, compared to over 950 a year earlier. Year-to-date revenue through the first nine months totaled $33.242 billion, with the top five customers accounting for approximately 25%.

How Much Cash Backs $895.4 Billion in Commitments?

According to the S-1/A, procurement commitments and lease agreements executed as of September 30 and thereafter total approximately $895.4 billion, almost entirely allocated to compute and infrastructure. Approximately $447.5 billion is expected to be incurred by the end of 2030, representing roughly half the total, with the remainder largely scheduled between 2031 and 2045; about $69.8 billion matures within the next 12 months.

On the same date, the company held $131.845 billion in cash, cash equivalents, and short-term investments. Calculations by TechFlow show total commitments are approximately 6.8 times this amount, with the portion maturing within 12 months accounting for about 52.9%.

The company plans to list on the Nasdaq Global Select Market, with Goldman Sachs, Morgan Stanley, JPMorgan Chase, and Citigroup leading the underwriting syndicate. The offering price range remains blank. According to CoinDesk, pricing is expected in mid-November.

Frequently Asked Questions

What was Anthropic's revenue in the third quarter?

$16.956 billion, a year-over-year increase of 1,127%.

What caused Anthropic's operating loss in the third quarter?

Approximately $5 billion in high-cost short-term compute, plus $1.96 billion in non-cash expenses related to a donation matching program.

How large are Anthropic's compute commitments?

Totaling approximately $895.4 billion, with about $69.8 billion maturing within 12 months.

When will Anthropic's IPO price be set?

The S-1/A does not disclose a date; however, CoinDesk reports pricing is expected in mid-November.

Data Sources

Anthropic, PBC S-1/A (SEC EDGAR, November 2, 2026)

CoinDesk Report (November 2, 2026)